| CAS No. | 90331-82-1 |
| Molecular Formula | C44H63N11O13 |
| Molecular Weight | 954.00 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
H-Pro-Thr-Glu-Phe-p-nitro-Phe-Arg-Leu-OH (CAS 90331-82-1) is a high-purity analytical reference standard with the molecular formula C44H63N11O13 and a molecular weight of 954.00 g/mol.
Owing to a nitrogen-containing heterocyclic scaffold, an amide group, a hydroxyl group, an ether linkage, H-Pro-Thr-Glu-Phe-p-nitro-Phe-Arg-Leu-OH is typically pale yellow to yellow amorphous powder. Its solid-state physicochemical attributes — including a molecular weight of 954.00 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The aromatic system may exhibit native fluorescence, enabling detection with a fluorescence detector (FLD).
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
CATO manufactures H-Pro-Thr-Glu-Phe-p-nitro-Phe-Arg-Leu-OH under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
| Molecular Formula | C44H63N11O13 |
| Molecular Weight | 954.00 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in DMSO, DMF, methanol |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 19.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1982 |
| Nitrogen Atoms | 11 |